Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / atmel / atmel_ssc_dai.h

diff --git a/kernel/sound/soc/atmel/atmel_ssc_dai.h b/kernel/sound/soc/atmel/atmel_ssc_dai.h
new file mode 100644 (file)
index 0000000..80b1538
--- /dev/null
+++ b/kernel/sound/soc/atmel/atmel_ssc_dai.h
@@ -0,0 +1,124 @@
+/*
+ * atmel_ssc_dai.h - ALSA SSC interface for the Atmel  SoC
+ *
+ * Copyright (C) 2005 SAN People
+ * Copyright (C) 2008 Atmel
+ *
+ * Author: Sedji Gaouaou <sedji.gaouaou@atmel.com>
+ *         ATMEL CORP.
+ *
+ * Based on at91-ssc.c by
+ * Frank Mandarino <fmandarino@endrelia.com>
+ * Based on pxa2xx Platform drivers by
+ * Liam Girdwood <lrg@slimlogic.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef _ATMEL_SSC_DAI_H
+#define _ATMEL_SSC_DAI_H
+
+#include <linux/types.h>
+#include <linux/atmel-ssc.h>
+
+#include "atmel-pcm.h"
+
+/* SSC system clock ids */
+#define ATMEL_SYSCLK_MCK       0 /* SSC uses AT91 MCK as system clock */
+
+/* SSC divider ids */
+#define ATMEL_SSC_CMR_DIV      0 /* MCK divider for BCLK */
+#define ATMEL_SSC_TCMR_PERIOD  1 /* BCLK divider for transmit FS */
+#define ATMEL_SSC_RCMR_PERIOD  2 /* BCLK divider for receive FS */
+/*
+ * SSC direction masks
+ */
+#define SSC_DIR_MASK_UNUSED    0
+#define SSC_DIR_MASK_PLAYBACK  1
+#define SSC_DIR_MASK_CAPTURE   2
+
+/*
+ * SSC register values that Atmel left out of <linux/atmel-ssc.h>.  These
+ * are expected to be used with SSC_BF
+ */
+/* START bit field values */
+#define SSC_START_CONTINUOUS   0
+#define SSC_START_TX_RX                1
+#define SSC_START_LOW_RF       2
+#define SSC_START_HIGH_RF      3
+#define SSC_START_FALLING_RF   4
+#define SSC_START_RISING_RF    5
+#define SSC_START_LEVEL_RF     6
+#define SSC_START_EDGE_RF      7
+#define SSS_START_COMPARE_0    8
+
+/* CKI bit field values */
+#define SSC_CKI_FALLING                0
+#define SSC_CKI_RISING         1
+
+/* CKO bit field values */
+#define SSC_CKO_NONE           0
+#define SSC_CKO_CONTINUOUS     1
+#define SSC_CKO_TRANSFER       2
+
+/* CKS bit field values */
+#define SSC_CKS_DIV            0
+#define SSC_CKS_CLOCK          1
+#define SSC_CKS_PIN            2
+
+/* FSEDGE bit field values */
+#define SSC_FSEDGE_POSITIVE    0
+#define SSC_FSEDGE_NEGATIVE    1
+
+/* FSOS bit field values */
+#define SSC_FSOS_NONE          0
+#define SSC_FSOS_NEGATIVE      1
+#define SSC_FSOS_POSITIVE      2
+#define SSC_FSOS_LOW           3
+#define SSC_FSOS_HIGH          4
+#define SSC_FSOS_TOGGLE                5
+
+#define START_DELAY            1
+
+struct atmel_ssc_state {
+       u32 ssc_cmr;
+       u32 ssc_rcmr;
+       u32 ssc_rfmr;
+       u32 ssc_tcmr;
+       u32 ssc_tfmr;
+       u32 ssc_sr;
+       u32 ssc_imr;
+};
+
+
+struct atmel_ssc_info {
+       char *name;
+       struct ssc_device *ssc;
+       spinlock_t lock;        /* lock for dir_mask */
+       unsigned short dir_mask;        /* 0=unused, 1=playback, 2=capture */
+       unsigned short initialized;     /* true if SSC has been initialized */
+       unsigned short daifmt;
+       unsigned short cmr_div;
+       unsigned short tcmr_period;
+       unsigned short rcmr_period;
+       struct atmel_pcm_dma_params *dma_params[2];
+       struct atmel_ssc_state ssc_state;
+       unsigned long mck_rate;
+};
+
+int atmel_ssc_set_audio(int ssc_id);
+void atmel_ssc_put_audio(int ssc_id);
+
+#endif /* _AT91_SSC_DAI_H */